US Patent Issued to ASAHI KASEI on Sept. 15 for "Hyaluronic acid derivative, pharmaceutical composition, and hyaluronic acid derivative-drug complex" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,735,513, issued on Sept. 15, was assigned to ASAHI KASEI K.K. (Tokyo).

"Hyaluronic acid derivative, pharmaceutical composition, and hyaluronic acid derivative-drug complex" was invented by Kohei Yabuuchi (Tokyo), Yoshiki Miyamoto (Tokyo), Keisuke Fukumoto (Tokyo), Toru Katsumata (Tokyo) and Yoshiyuki Nakagawa (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a hyaluronic acid derivative having a steryl group introduced therein, wherein a ratio Mw/Mn of a weight-average molecular weight Mw to a number-average molecular weight Mn of the hyaluronic acid derivative is 1.11 or more and 10.0 or less."

The patent was filed ...